M14 parts & accessories

SEI M14 Barstock Receiver
Smith Enterprise Inc. is proud to offer our superior Smith M14 receiver, machined from a solid block of 8620 barstock. We have been manufacturing M14 receivers since 1984 and are the leader in the M14 billet manufacturing arena. Machined to exacting USGI tolerances as per the original prints, Smith Receivers undergo a stringent heat-treating process that culminates in a proprietary cryogenic treatment process, allowing the receiver to have uniform molecular structure in the crystals of the material, resulting in superior strength and hardness. Each receiver undergoes a meticulous hand-deburr/finish which results in an heirloom-quality receiver that is built not only for the rigors of combat, but also to be passed down through generations. The final stage of production is a mil-spec black parkerized finish.

If you would like to buy a receiver, we will transfer and ship to any FFL in the country (complying with state and federal regulations). Please have your dealer’s FFL and information ready and available when ordering a receiver through us.
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NOTE: SEI recommends sending your rifle here installation – all our M14 barrels are short chambered, and require fitting to the receiver. We use a special made Manson M118LR reamer, that allows accurate headspace for M118LR 175 gr. through M80 ball ammo.

NOTE: SEI recommends sending your rifle here installation – all our M14 barrels are short chambered, and require fitting to the receiver. We use a special made Manson M118LR reamer, that allows accurate headspace for M118LR 175 gr. through M80 ball ammo.

NOTE: SEI recommends sending your rifle here installation – all our M14 barrels are short chambered, and require fitting to the receiver. We use a special made Manson M118LR reamer, that allows accurate headspace for M118LR 175 gr. through M80 ball ammo.

M14 SOCOM CQB Barrel, 16”
Replaces Springfield SOCOM 16 and SOCOM II, or can be used for new builds on any M14 type receiver.
1:10” twist, 4 grooves. Made from 4140 chrome-moly and stress relived, with MIL-STD 171 magnesium phosphate finish. Barrel is crowned at muzzle, concentric to bore and of the proper depth. Chambers (when we install them) are a 16+ finish.

Our barrels will shoot 1 MOA with M118LR or any of the 168 gr. factory match ammo. USGI LC M80 ball or any of the U.S. made M80 ball (with the exception of Portuguese 147grn. from the 1980’s) will shoot under 2 MOA most of the time.

We recommend that you use the P/N 2001V SOCOM Kit, The SEI gas lock, made from fatigue proof steel, has the correct deck height that allows the use of a standard USGI front sight, or one of our bar stock sights (shown below): P/N 2055 USGI replacement, P/N 2018 Tritium Bar Stripe, P/N2019 Tritium Dot, or P/N 2004 National Match. We also recommend replacement of the standard rear sight with P/N 2020, that uses a smaller aperture for better accuracy.

Featured in the Shooting Illustrated Jan. 2012 issue, written by Gary P. Johnson.

NOTE: SEI recommends sending your rifle here installation – all our M14 barrels are short chambered, and require fitting to the receiver. We use a special made Manson M118LR reamer, that allows accurate headspace for M118LR 175 gr. through M80 ball ammo.

SEI M14 Gas Cylinder, NSN 1005-00-790-8766New production made to exact USGI specifications. Forged, fully machined and heat-treated 416 stainless steel. Double heat-treated to include M80HT 60 HRC on surface. Will not corrode. To finish, this part is cryogenically treated. As used on our military contracted rifle builds.

SEI Compliant Gas Lock
For customers with a Springfield Armory SOCOM 16 rifle who live in areas where muzzle threads, flash hiders, or even muzzle brakes are prohibited, this part may be compliant if intstalled per the law.

The SOCOM 16 factory muzzle brake is a one-piece casting that features a lower deck height than a standard M14/M1A. In order to compensate, sight that is sold on the SOCOM 16 is taller and wider, and the aperture is also wider, than the regular M14 version. The blade on the factory SOCOM XS sight is .135" and the rear aperture is .130”, compared to a front sight width of .075” and an aperture of .065” on a standard size.

If you are using this with an 18 inch barrel:
18" barrels will shoot higher than 22" barrels. To compensate, SEI recommends P/N 2012 GLFS-D-18, or P/N 2013 GLFS-D-18 Gas Lock that is at the correct height, mated to a standard front sight such as the ones mentioned above. Springfield Armory uses a taller front sight like the Springfield Scout.

M14 Adaptor, Castle Nut Type, New York CompliantMachined from fatigue proof steel bar stock. Includes wire EDM internal male splines and rectangular hole for the castle nut. Threads have been machined off to comply with compliant state regulations regarding “No flash suppressor, no muzzle brake”. Castle nut must be TIG welded to the adapter to make it a permanent device.

M14 Tritium Bar Combat SightDesigned for use in close combat during limited visibility with MK14-type weapons. Not for use in high precision engagements. Genuine Trijicon self luminous vial in 4140 Chrome Moly Wire EDM front sight unit.

Limited civilian availability. A must for high stress or cold weather applications. Standard issue on USN & USAF MK14's and US Army M14SE's.

Current design does not allow the bolt to close with an empty magazine inserted (but it can be closed if the magazine follower is pressed down).

CAUTION – the extended bolt stop/release is designed to make access and manipulation of the bolt much easier and faster. Therefore, DO NOT REST THE WEAPON ON ITS SIDE OR LEAVE IT UNATTENDED if the bolt is locked back and a loaded magazine is in the receiver. ALWAYS KEEP THE SAFETY ENGAGED.

The SBR (Smith Battle Rifle) Gas Piston has been developed for the demands of 21st century warfare, and is superior to the issue versions.

Made from 440c cutlery grade stainless steel and stress relieved. OD grooves are fully radiused on the bottom (instead of square) to enhance cleaning and carbon removal. After heat treatment and through hardening to 58 HRc Rockwell, the pieces are ground to final dimensions, with a glass-like surface finish of 9 on the Profolomater, machined to tolerances of +/- .0005” (1/2 of 1000th of an inch). Final finishing includes surface hard chrome plating to .0005” depth, and heat treatment to our SOP to prevent chrome cracking and hydrogen embrittlement.

Developed for war fighters with the M14,EBR,EMR, etc., made to resist corrosion and excessive wear, the corners stay sharp where needed to minimize gas blow-by. When used with our M80HT gas cylinder, wear is kept to a minimum, and can withstand infrequent maintenance in the field. Accuracy will not be diminished and may improve as long as the barrel is in good condition.

M14/M21 A5 C-IED Gas plug (Longer)New manufacture by SEI. 420 Stainless, double heat-treated to include M80HT 60 HRC on surface and cryogenically treated. Will not corrode. As used on our military contracted rifle builds.